Because this arm is in equilibrium, you can pick any axis of rotation you would like. On the picture above identify an axis of rotation that reduces the number of unknown's in the torque equation you will created for part C). Write down the equation that results from the fact that the "Net external torque (for the axis you chose in in part B) must be zero" on this arm.
Because this arm is in equilibrium, you can pick any axis of rotation you would like. On the picture above identify an axis of rotation that reduces the number of unknown's in the torque equation you will created for part C). Write down the equation that results from the fact that the "Net external torque (for the axis you chose in in part B) must be zero" on this arm.
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